How to pass variables to slot methods in QT?

Question

I\'m making a little chat messenger program, which needs a list of chat channels the user has joined. To represent this list graphically, I have made a list of QPushButton

Answer 1

I would do it with "relay" objects:

Create TabSwitchRelay which is a sub-class of QObject with this constructor:

TabSwitchRelay::TabSwitchRelay(QObject *parent, Messanger * m, const QString & c)
: QObject(parent), m_messanger(m), m_channel(c)
{
}

It also has a slot clicked():

void TabSwitchRelay::clicked()
{
    m_messager->switchTab(m_channel);
}

Now replace the line in your code that does connect with this:

TabSwitchRelay * tabRelay = new TabSwitchRelay(pushButton, this, channel);
connect(pushButton, SIGNAL(clicked()), tabRelay, SLOT(clicked()));

It's not tested but you get teh basic idea.